Release device for wringers



y 1940- w. L. KAUFFMAN, 20 2,202,776

RELEASE DEVICE FOR WRINGERS Filed larch 17, 1937" IN ENTOR.

A TTORNEYS.

Patented May 28, 1940 UNITED STATES PATENT OFFICE 2.202.776 RELEASEDEVICE FOR WRINGERS Application March 17, 1937, Serial No. 131,334

7 Claims.

Power wringers are commonly provided with safety release mechanisms bywhich the pressure on the rolls may be instantly released. The presentinvention is designed to improve such release mechanisms. In carryingout the invention operating devices are provided which are arranged tobe manually actuated to effect a. release. This is accomplished byconverting an inward movement of the operating member to an endwisemovement which will trip the release device and providing in this way avery much simplified mechanism for effecting the release. The inventioncontemplates also an operating bar extending longitudinally of thewringer which is operative by an inward movement of the bar at eitherend, or the bar as a whole. Features and details of the invention willappear from the specification and claims.

A preferred embodiment of the invention is illustrated from theaccompanying drawing as follows:

Fig. 1 shows a front elevation of the wringer, partly in section tobetter show construction.

Fig. 2 an enlarged section on the line 22 in Fig. l.

Fig. 3 a section on the line 3-3 in Fig. 2, showing the latch parts in aposition following release.

Fig. 4 a similar view with the parts assumed during the movement of thetop bar to set position.

The wringer has a frame consisting of a base i, and side stiles 2 and 3.A lower roll 4 and an upper roll 5 is provided, the lower roll having a.shaft 6 journaled in bearings l, the bearings i being arranged in theside stiles. The upper roll 5 has a shaft 8 which operates in bearings 9slidingly mounted in the side stiles. A spring it rests on the upperbearings and exerts pressure from the top bar it through an adjustingscrew I2, the screw operating through a nut l3 in the top bar.

The top bar is detachable. One end is secured by interlocking shouldersformed by stabbings. The stabbing M on the side stile forming a shoulderl5, and a stabbing It on the end of the top bar forming a shoulder l1engaging the shoulder l5. These shoulders are arranged to disengage whenthe opposite end of the top bar is swung upwardly in release so as togive more definite release movement to the top bar.

A release mechanism is provided for the opposite end of the top bar. Alatch member 20 is provided with a slot 2| which has portions 22 and 23extending each side of a pivot pin 24 when the latch member is in setposition as shown in Figs.

1 and 3. These portions 22 and 23 are preferably inclined with the apexat the set position. The latch member is of channel form having thesides 20a. and connecting plate 20-b. Hooks 25 are formed on the sidesEll-a and are adapted to enter notches 26 in the upper inner comers ofthe stile 2, the hooks engaging the shoulders formed by the upper end ofthe notch, the plates having cut-away portions 38 to clear the'portionof the side stile above the notch.

The latch has a trip finger 2'3 which is adapted to engage theunder-side of a cross member 28 forming a portion of the trip member.The cross member extends through slots 29 in the top and extends intooperating bars 3l-3l at the front and rear of the wringer. A companioncross member 28a extends through slots 29a, and is secured in theoperating bars. The cross members 28 and 28a have'cam surfaces 32 whichare adapted to engage the ends of the slots 29 and 29a. respectivelywhen either cross member is moved inwardly, and through this engagementto move the trip cross plate 28 endwise sufllciently to release thefinger 21 and permit the inner end of the latch to swing upwardly so asto release the hook 25 and consequently the top bar from the side stile.This release of the release end of the top bar as it swings up moves theshoulder ll outwardly endwise so as to bring this shoulder beyond thealignment with shoulder 55 and thus efiect the release of the resettingmechanism and this permits the further opening of the top bar to freethe wringer rolls from pressure. A spring 33 is secured to the crossplate 280. and yieldingly draws the top member comprising the crossplates 28, 28a. and the connecting operating members 3| toward the rightor set position. The cross plate 28 has a lip 36 which forms an inclinedsurface on the upper part of the cross plate 28. A pin 35 extendsthrough an opening 38 in the connecting plate 201). This pin is providedwith a head 31, and a spring 38 is tensioned between the head 31 and theconnecting plate 201 thus yieldingly pressing the inner end of the latchdownwardly. As soon as the top moves upwardly and the hook has clearedthe upper end of the stile the spring 38 presses down the inner end ofthe latch, and the finger 21 operating on the incline 34 crowds thelatch toward the right (see Fig. 3) sufficiently to permit the finger toclear the cross plate 28. The portion 22 of the slot 29 permits the endmovement for this clearance. The downward movement of the inner end ofthe latch is obstructed by stop 38 riveted on the under-side of thecross plate 28. As soon as the ther pressure of the spring 38 pressingdownwardly on the latch effects a movement of the latch toward the leftby reason of the inclined or camming surfaces in the portion 22 of thepiv- 01; slot.

As the top is reset the bottom of the hook 25 engages the top of thestile. This under-side of the hook has a cam surface 25a which forcesthe latch toward the left so that the hook may clear the inner face ofthe stile. (See Fig. 4.) The portion 23 of the pivot slot permits thisendwise movement. The hook is yieldingly carried into the notch 26 bythe pressure of the spring 38 and the camming action of the portion ofthe slot 23 on the pin 24 thus bringing the parts to the position ofengagement shown in Fig. 1, and

' as the pressure of the main spring is exerted on the top the pin 24seeks the upper or apex of the slot retaining the engagement of the hookin the notch and also the position of the finger 21 under the trip plate28.

It will be noted that an inward or outward movement of either operatingmember 3! forces the endwise release movement of the trip plate 28. Ifthe operating members 3! are hit toward the ends only one of the cammedsurfaces 32 may be brought into active operation so as to effect thisendwise movement. In any event, the operation of operating bar illeffects this endwise movement either through an inner movement of one orthe other cross plates or by both of them. The endwise yielding of thelatch member on trip plate 28 through the incline 3d may permit of theresetting of the finger relatively to the trip plate but'in this casethe spring 38 would have to be of such stiffness as to overcome theforce of the spring 33 resisting the endwis movement of the trip plate28.

The specific latching mechanism disclosed in this application forms thesubject of a'companion application executed on even date here'withSerial No. 131,333. 1

What I claim as new is:

1. In a wringer, the combination of a frame; rolls mounted in the frame;yielding means releasingly supplying pressure to the rolls from theframe; and a release device for the means comprising a trip membereffecting a release by an endwise movement thereof and including aplurality of connected and longitudinally spaced slides in the framehaving cams moving the member endwise of the wringer with a movement ofthe slides crosswise of the wringer.

2. In a wringer, the combination of a frame; rolls mounted in the frame;yielding means releasingly supplying pressure to the rolls from theframe; and a release device for the means comprising a trip membereffecting a release by an endwise movement thereof and including aplurality of connected and longitudinally spaced slides in the framehaving cams moving the member endwise of the wringer with a movement ofeither slide and both slides crosswise of the roll axes.

3. In a wringer, the combination of a frame;

- inner end of the latch reaches this stop the furrolls mounted in theframe; yielding means releasingly supplying pressure to the rolls fromthe frame; and a release device for the means comprising a trip membereffecting a release by an endwise movement thereof and including aplurality of longitudinally spaced slides in the frame having camsmoving the member endwise of the wringer with a movement of the slidescrosswise of the roll axes and an operating bar extending longitudinallyof the wringer rigidly secured to the slides.

4. In a wringer, the combination of a frame; rolls mounted in the frame;yielding means releasingly supplying pressure to the rolls from theframe; and a release device for the means comprising a trip membereffecting a release by an endwise movement thereof and including aplurality of longitudinally spaced slides extending to the front andrear of the frame and having camsmoving the member endwise of thewringer with a movement of the slides crosswise of the 'plane of theroll axes in either direction and operating bars rigidly connected tothe slides at both the front and rear of the wringer.

5. In a wringer, the combination of a wringer frame; rolls mounted inthe frame; a releasable top on the frame; a pressure means exertingpressure from the top to the rolls; and a release device for releasingpressure on the rolls releasably securing the top bar on the frame andcomprising an unstable latch between the top bar and the frame, a tripmember locking the latch in set position, said trip member releasing thelatch by a movement of the trip member endwise of the wringer, said tripmember including an operating bar, and mechanism converting a movementof the bar crosswise of the wringer to an endwise movement. of themember. 6. In a wringer, the combination of a wringer 'frame;-rollsmounted in the frame; a releasable topon theframe; a pressure meansexerting pressure from the top to the rolls; and a release device forreleasing pressure on the rolls and releasably' securing the top bar onthe frame and comprising an unstable latch between the top bar andtheframe, a trip member locking the latch in set position, said trip memberreleasing the latch by a movement of the trip member end- 'wise of'thewringer, said trip member including an operating bar and mechanismconverting a movement of any part of the bar crosswise of the wringer toa movement of the member endwise of "the wringer.

7. In a wringer, the combination of a wringer frame; rolls mounted inthe frame; a releasable top on the frame; a pressure means exertingpressure from the top to the rolls; a release device for the meanscomprising a trip member effecting a. release by a movement thereofendwise of the wringer and including a plurality of longitudinallyspaced slides mounted in the top having cams moving the member endwiseof the wringer with a movement of the slide crosswise of the wringer.

WALTER L. KAUFFMAN, II.

